I'm almost certain Windows Home still has the Local Policy Editor. I'll have to check this evening. Assuming so though, and with that, you can configure your updates to operate however you wish. The idea that "Windows Power Users" can't control this behavior is nonsense. Either they are "Power Users" and can meddle in the registry or LPE, or they are not "Power Users."
All that said, I see both sides of this. MS is forcing most users to accept updates, which in turn tends to keep them more secure. It's not like Linux/MacOS don't get updates. True, MS updates have usually required a reboot which is something MS has improved upon but not fixed in recent versions of Server and Win11.
In the end, Grandma is familiar with Windows, her websites, photo apps and home multifunction printer all work on it the way she is familiar with, and she just doesn't want Linux. That's OK. You folks can still have your Linux (I have some too.) But in the end, until someone comes up with something as good for Linux as Group Policy in AD is for Windows, the business world is largely staying Windows. Hell, even Intune sucks in comparison, and that's MS's "next great thing" in endpoint management.